Location
Fort McMurray, Alberta
Share
Design and construction of the Gregoire Sanitary Sewer project in Fort McMurray posed significant risks and challenges.
The continuous, 1.6 kilometre, 600 millimetre diameter, dual sanitary sewer system traversed a business area, soccer field, children’s play park, a busy roadway, and Highway 63—a major highway and the only transportation link to the oil sands development north of Fort McMurray. The sewer alignment included significant environmental and geological constraints.
Associated Engineering worked closely with the Municipality to develop a design and construction methodology employing horizontal directional drilling, a trenchless construction technique. Using trenchless construction, the sewer was installed in varying and steep terrain through an environmentally sensitive valley, over 50 metres deep, to avoid an actively sliding slope and protected waterway. Using this technical approach for such a long sewer over varying and complex terrain and to such significant depths was an innovative application of this technology.
The design and construction of the Gregoire Sanitary Sewer demonstrates the suitability of horizontal directional drilling for installing a long pipeline through varying and deep terrain to minimize impact on the environment, reduce construction risk, and reduce impact on the public.


Project Highlights
People on this project
More Infrastructure Projects
See all projects

Infrastructure
Glenmore Landfill Entrance

Transportation
Sutherland Ave Pedestrian Bridge

Infrastructure
Big Dock and Water Front Area Redevelopment

Infrastructure
Howard’s Pass Access Road Bridge Replacement and Road Improvement

Infrastructure
East Brampton Trunk Sanitary Sewer Twinning

Buildings
North Wall Sewage Treatment Plant and Main Lift Station Upgrade

Infrastructure
Raw Water Supply – Pipeline River Crossing

Bridges
Muskeg River Bridge

Infrastructure
Melville Water Treatment Plant

Infrastructure
Nass River Bridge Replacement

Water
Jericho Reservoir

Infrastructure
North Interceptor Sanitary Trunk

Parks & Recreation
Pexsisen Elementary School

Active Transportation
Highway 1 at Mountain Highway Interchange

Environmental
Splatsin Eagle River Compensation Site Identification Site
LEADERSHIP INSIGHTS
See all insights












